Interesting the concern over corner weight on an assumed street car. Unless ERA missed the manufacturing completely, I don't see how corner weighting is really going to matter much. There are lot's of other assembly tolerances that are taken for granted and are possibly not correct e.g. suspension pickup point alignment, chassis squaring, etc. all of which academically affect corner weight and all should be optimized before corner weighting. Isn't that how Shelby made his living i.e. Cobra, GT 350?
On ride height - The slight rake in chassis is just good setup. We get some component of aero working to push it down (at least at the speeds we can legally drive) and also help with squat.
If we consider track - take a look at this software and consider RC and IC and check the resultant ride height against the manual. Depending on tire height (as an example) things will change.
Circle Track Analyzer Racing Simulation Chassis Setup Software Program
I wish we could find some 1 to 1.5" dropped spindles. We could drop the CG and maintain a great RC.
Except for the entertainment value, not sure any of it pertains much to a street car. Very much applies to a track car - (especially if you build an under powered motor
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I think ERA has much balance built into their cars as designed, manufactured, and delivered. If you did not purchase a roller, then suspension blue printing makes sense. If not, other than a very good educational exercise, why bother corner weighting a street bound ERA? I doubt we could tell the difference between one that was, and one that was not, if testing were done legally on the street (that means clover leaves at legal speed).
My 3500lb mustang has not been corner weighted and for what it is and what I do with it (intermediate HPDE) it runs like stink. I would c-weight it, but I have spent a lot of time making it track-able and that is time (and $) stolen from the FIA. (much forgiving to learn in though
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We'll corner weight the FIA, but we are setting it up for track use. We have taken the time to square the sus pick up points, the steering, bump steer it, square wheel base, etc. IMHO - none of which makes much difference for a street car built to ERA standards following their manual.
Go Stanford - 3:06 to go
drop spindles?
chr